Mining-machine.



B.M0GQWAN. MINING IINGHINE. APPLICATION FILED. JUNE 14, 10m.

Patented Nov.4,1913.

3 SHEBTSHBET 1.

E. MGGOWAN MINING MACHINE.

APPLICATION FILED JUNE 14, 1912.

Patented Nov. 4, 1913.

3 SHEETS-SHEET 2.

llullllllllln.

E. -MoGrOWANl MNING MACHINE. A

APPLIGATION FILED JUNE 14,1912.

1,077,418.. Patented lvm/.4,1913

3 SHEETS-SHEET 3.

LVJTNESSES: N/ENTOR.

EDWARD MesoivANy or MULBERRY, KANSAS.

MINING-rmsH1NE.

Specification of Letters Patent.

Patented Nov. 4, 1913.

kppl'ication led J une 14, 1912. Serial No. 703,683.

To all whom it may concern Be it known that I, EDWARD MCGowAm a citizen of the United States, and a resident of Mulberry, in the county of Crawford and State of Kansas, have invented a certain new and useful Improvement. inv Mining- Machines, of which the followingl is a specification.

movement is imparted and which has laterallyl extending cutters adapted to cut a kerf in the wall of a mine chamber or tunnelq With this type of machine itis ordinarily necessary -to employ anchoring means for"y v'holding 'the machine as a whole stationary,

or toV employ devices, such as windlasses 'and ropes for forcing the machine toward the work.

One object of my invention is to provide a, mining machine which will dispense with-A anchoring devices, windlasses and such de` vices, and which may be easily and quickly operated by one attendant, and readily moved into the various positions required to i effect the work desired to rbe done.

My invention provides further a mechanism which may be readily operated without interfering with-or being interfered by the props usually employed in mine chamf belt having laterally extendingcutters, if'

bers.

I have found that in the use of an endless suitable supporting means is provided, the

cutting mechanism -itself may be employed to draw the machine bodily toward the work. My invention, therefore, provides such a supporting mechanism. I have also found that by providing the supporting meansY with a suitable guard, this guard traveling alongand bearing against the wall of 'the mine in which the kerf is being cut, will hold the machine back `so that the cutting mechanism can not choke down.

My invention provides further novel means for effecting the proper disposition of the means for support-ingthe cutting .mechanism whereby the cutting mechanism may bev applied at the proper angle relative to the horizontal and have the required radial movement imparted to it. p

Other novel features of my invention are hereinafter fully described and claimed.

In the accompanying drawings, which illustrate the preferred form of my invention, asapplied to a radially movable endless belt' cutting mechanism, Figure l is' a side Velevation of the machine, the cover being lshown in vertical section. -F ig. Q is .a plan View of the machine, the cover being shown in horizontal section. Fig. Bis a ve'rt'caljsection on the line a-b of Fig. 2. ig. 4 is a vertical section, enlarged on the line c-fd. of Fig. 2. Fig. 5 is a plan view *partly broken away of a portion of the for` -Wardpartxof the machine. Figs. 6 and 7 are diagrammatic views showing `different operative positions of the machine in 'a mine chamber.

Similar reference characters designate .fwhich it is designed to cut a ykerf 5, Figs. 6

and 7 ata level substantially in the plane of the .door of the chamber or tunnel.

Pivoted by a horizontal bolt 6 to the fo'rward portion of the body 1 of the truck is an upwardly and downwardly swingingframe 7, which is supported in and moved tothe desired .positions by blocks or nuts i8 respectively resting upon wedgesI 9 supported by the body 1. The blocks or nuts 8 are respectively mounted on horizontal longitudinal ro'taryscrews 10, lthe rear'ends of which are respectively rotatively. supportedin brackets 11 secured tothe frame 7,

the other ends of said screws being rotatively mounted in bearings 12 respectively,

lwhich bearings are also secured to. the

frame 7. y

Rigidly secured respectively to the screws 10 forward of and adapted to bear against the brackets 11 are bevel pinions. 13 which respectively mesh with bevel pinions 14 secured to and rotative with a horizontal transverse" shaft 15 rotatively mounted in the brackets 11. 15 are preferably squared, as shown, so as to be readily gripped with a crank or VAWrench, not shown, by which the shaft is turned so as to effect an adjustment o-f the swinging frame 7 by the mechanism just described.- Fixed y.on` the forward ends of the screws 10 and adapted to bear against the forward sides of the bearings 1Q respectively are -collars 16. By turning the shaft .15 in the-'proper direction the blocks or nuts Opposite ends of the shaft ion i pcsite direction, the blocks ornuts 8 will be .movement about the bolt 18 as an axis.

moved forwardly on the wedges 9, and the frame 7 will then lower by gravity.

Supporting means comprising a horizontal platform 17 is radially mounted on the frame 7 to which it is pivoted by-a bolt 18 which is disposed vertically vwhen the frame, 7 is disposed in the horizontal position shown in Fig. 1 and Fig. 3. The said supporting means, is also provided with a forwardly extending arm 19, of any desired form and construction, and which has its rear portion firmly secured to the platformv 17. This arm 19 carries adjacent to its forward end la substantially horizontallydisposed sprocket wheel 20 rotatively mounted, and having suitable means for being adjusted forward and backwardly on the arm 19 for the purpose of tightening or loosening an endless chain belt 21 mounted on the sprocket'wheel 2O and on a sprocket wheel 22 which is secured to and rotative with a vertical shaft 23 rotatively mounted in bearings 2a Aand 25, secured respectively to the upper side of the platform 174 andto the underside of the arm 19, as shown in Fig. 3.'

The belt 21 is ,provided with cutters 26 which extend laterally beyond4 the belt and are adapted to cut the kerfs 5.

Any suitable means may be provided for driving the chain belt 21. -In the drawings I have shown rigidly'afiixed to the shaft 23 a spurgear Wheel 27 which meshes with a pinion .28 rotatively mounted on a vertical stud 29 the lower end of which is secured to the bearing 2st.v Also rotative on thestud 29` and secured to the pinion 2S is a bevel gear wheel 30 which meshes with a' bevel pinion 31 secured to and rotatable with the armature shaft- 32 of an .electric motor 33 which is supported on the platform 17 over the truck frame 7 and to the rear.1 of the pivot bolt or king pin 18, the weigilit of the motor being thus employed to'balance the weight of the forward part of the platform, its arm and the cutting mechanism. A suitable cover or housing 34 may be mounted removably on the platform 17 to protect the motor and adjacent gearing. The under side of the platform 17 may be provided with casters which rest upon Ithe frame 7.

Any suitable means may be employed to give the platform. 17 a .swinging or radial In the drawingsv l have shown for this purpose an arcuate rack Sdwhich is rigidly secured to the frame 7 and has at its center the bolt 18. Meshing with the rack 3G is a pinion 37 ywhich is rigidly secured to a vertical shaft 38. extending through and rotatively mounted in the platform 17. Secured to 419 may be radially swung through the intermediacy of the worm wheel 39, shaft 8S, pinion 37 and rack 3G.

The forward end of the platform 17 is preferably arcuate to afford a bearing surface adapted to travel along and bear against the wall L1 when the kerf is being cut. The center of the circle of the arcuate bearing surface 43 is, preferably, the axis of the platform 17 or the bolt 18.

In starting a cut through .a plane wall at oneend orside of the mine chamber, the machine is disposed, first, as shown in Fig. G, with the belt 21 disposed longitudinally in the middle of the track, as shown `in solid lines in Fig. 6. The motor 33- is Athen started, thereby driving the belt.. With the cutters 26 disposed, as-shown in the drawings, the motor is 'run so as to drive the belt 21 clockwise, the forward end of the bclt being forced against the wall vto start the kerf. As the cutters 26 cutaway the material, the hand wheel 1121s turned so as to swing the arm 19 and belt 21 to the angular position shown in dotted lines iii-Fig. G, by

means of the mechanism hereinbefore described. IThe hand wheel 112 is then operated so as to cause the platform 17 and belt 21 to be swung clockwise as indicated by the dotted arrow in Fig. 6. An extension of the track is then made,after the material above the kerf thus cut has been removed, and the .platform 17 is again swungto the angular position shown in solid lines in Fig. 7.v The machine is now movedbodily forwardly on the track, the belt 21 being held in the angular position last described until the belt 21 reaches the position shown in dotted lines in Fig. 7. 'l` he platform 17 and belt 21 are then swung clockwise by operating the hand wheel 42 so that the cutters cut out a kerf 5. Thefbelt 21 and platform 17 may then be withdrawn. to permit the removal of the material above the kerf thus 114;. It will be seen that as my machine does not have to be anchored to hold it stationary, but is readily moved forwardly as the cutting is being effected, the machine may be used so as to easily avoid the props. As the @mais f belt 21 with its cutters 26 in running tends to draw the machine toward the work, and as the `machine is mounted on a track along `which it can run toward the wall in which the' kerf is being cut, there would be a liability ofl the belt being lchoked byits pulling action which operates to cause it to further enter the wall. By providing the arcuate guard 43, the machine is held back lwhen this guard strikesthe wall, thus preventing the choking ofthe belt. By having this. guard Iof an arcuate.formV on. its bearing surface,

and the center of the arc being the bolt 18, the axis ofthe platform 17, the guard 43 will travel alongand bear against the Wall as the belt 21 is swung radiall in making the cut,

-withoutV oering such riction to the turning of the platform 17 as would be annoying or as would affecttheradial movement of the platform.

I do not limit my invention to the structure shown and described, as modications cutting means adapted `to cut' a kerf in vthe wall of a mine, and supporting means pivoted to the carrying means and carrying the cutting means and having a guardA adapted to travel along and bear against the wall of a mine, the bearing surface of ,said guard being an arc the `center of which -is the axis on which the supporting means swings. I i

2. In a mining machine, a track, a wheeled truck adapted lto run on said track, and to be moved,l freely 'forward ,during the cutting operation, cutting'means adapted tol cut a kerf in a wall of a mine, and supporting means carrying the cutting means and pivotally mounted on the truck and having a guard adapted to travel alongI and bear against the wall during the cutting in surfacelthe center of said supporting means.

ed 'supporting means having' Aan arcuate guard adapted totravel -alon and bear againstthe wall of a mine `during the cutting operation, the bearing surface of the guard. being an arc the center of which is the axis ofthe supporting means, and cutting means carried by the supporting means and `in operation being adapted .to orcethe name 4to this specification in the presence of two subscribing witnesses.

Witnesses 'VVARREN 1D.I HoUsE,

' AUSTIN: CHARME.

operation, the guard havincr an arcuate bear# wich is the axis of 3. -In a mining machine, pivotally mountguard towardthe work and against the wall.

In testimony whereof I have signed my EDWARD MeGowAN. 

